8
User’s Manual
status and measurements” area mirror such conditions.
By switching the selector to “OFF/RESET” the following operations are executed:
1) Activation of the engine shutdown sequence
2) Forced control of mains power supply
3) Reset of any stored fault causing the generator set shutdown
When the board is
in the “OFF/RESET” mode the direct current consumption is
reduced to a minimum since the displays show only a central dash, while all the
signals are off except the indicator “KR” (turned on, only for SW type 08) as well
as the indicators “ENGINE RUNNING”, “GENERATOR LIVE” and “MAINS LIVE”
showing respectively the engine, the generator and the mains status (normally
only the indicator “MAINS LIVE” is turned on).
b) PROG. (PROGRAMMING): in this mode the board behaves exactly as in the
“OFF/RESET” mode but with the opportunity to view and/or change the value of
the parameters configuring the operating sequences of the generator set
c) MAN. (MANUAL): in this mode the board is set to manage the manual running of
the generator set. In short:
1) The procedures for the manual starting and shutdown of the engine are
enabled, while those for the automatic starting and shutdown of the engine
are disabled (therefore the board will never automatically start the engine).
2) It is possible to manual operate the power changeover on the generator set
through an explicit command of the operator (if the generator is ready to
supply, of course). In MAN, the board will never execute such switching
automatically.
When the selector is switched on “MAN”, the engine keeps its status
(running/dead).
d) AUTO (AUTOMATIC): this is the normal operating mode of the board. In this
mode the engine is automatically started/stopped in case of mains failure or at
regular intervals to keep it efficient. In the same way, the power changeover is
automatically switched on mains or on the generator according to their status.
Warning: when the selector is on this mode any maintenance of the
generator set and/or on the electric switchboard is forbidden.
e) TEST: this mode allows starting the generator set keeping all the functions for the
management of the changeover as in the AUTOMATIC mode. By switching the
selector on TEST, a series of starting attempts will be executed (automatically,
the operator will not have to press “START”),
independently
from the mains
status. In the same way, by quitting the TEST mode (for the AUTOMATIC mode),
if the mains is present the engine will stop (with the usual cooling cycle).
Normally, in the TEST mode the users are switched on the mains. They can be
switched on the generator set (if it is ready to supply) only in the following two
cases:
1) Mains failure
2) Explicit command of the operator (in order to test the entire system, not only
the generator set).
For the SW version
12
(/P boards), KG is activated in the TEST mode if the
generator is ready to supply power. It can be deactivated by manual command.
